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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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545104dd2b
There's inconsistency between dmesg and the trace event output.
When dmesg says "severity=Corrected", the trace event says
"severity=Fatal". What happens is that HW_EVENT_ERR_CORRECTED is
defined in edac.h:
enum hw_event_mc_err_type {
HW_EVENT_ERR_CORRECTED,
HW_EVENT_ERR_UNCORRECTED,
HW_EVENT_ERR_FATAL,
HW_EVENT_ERR_INFO,
};
while aer_print_error() uses aer_error_severity_string[] defined as:
static const char *aer_error_severity_string[] = {
"Uncorrected (Non-Fatal)",
"Uncorrected (Fatal)",
"Corrected"
};
In this case dmesg is correct because info->severity is assigned in
aer_isr_one_error() using the definitions in include/linux/ras.h:
Signed-off-by: Rui Wang <rui.y.wang@intel.com>
Acked-by: Ethan Zhao <ethan.kernel@gmail.com>
Link: http://lkml.kernel.org/r/CANVTcTaP18CiGOSEcX5Ch_wPw9mEhkgokfp+d+ZOMFD+Ce4juA@mail.gmail.com
Signed-off-by: Borislav Petkov <bp@suse.de>
78 lines
2.1 KiB
C
78 lines
2.1 KiB
C
#undef TRACE_SYSTEM
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#define TRACE_SYSTEM ras
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#if !defined(_TRACE_AER_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_AER_H
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#include <linux/tracepoint.h>
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#include <linux/aer.h>
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/*
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* PCIe AER Trace event
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*
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* These events are generated when hardware detects a corrected or
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* uncorrected event on a PCIe device. The event report has
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* the following structure:
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*
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* char * dev_name - The name of the slot where the device resides
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* ([domain:]bus:device.function).
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* u32 status - Either the correctable or uncorrectable register
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* indicating what error or errors have been seen
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* u8 severity - error severity 0:NONFATAL 1:FATAL 2:CORRECTED
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*/
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#define aer_correctable_errors \
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{BIT(0), "Receiver Error"}, \
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{BIT(6), "Bad TLP"}, \
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{BIT(7), "Bad DLLP"}, \
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{BIT(8), "RELAY_NUM Rollover"}, \
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{BIT(12), "Replay Timer Timeout"}, \
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{BIT(13), "Advisory Non-Fatal"}
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#define aer_uncorrectable_errors \
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{BIT(4), "Data Link Protocol"}, \
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{BIT(12), "Poisoned TLP"}, \
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{BIT(13), "Flow Control Protocol"}, \
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{BIT(14), "Completion Timeout"}, \
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{BIT(15), "Completer Abort"}, \
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{BIT(16), "Unexpected Completion"}, \
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{BIT(17), "Receiver Overflow"}, \
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{BIT(18), "Malformed TLP"}, \
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{BIT(19), "ECRC"}, \
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{BIT(20), "Unsupported Request"}
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TRACE_EVENT(aer_event,
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TP_PROTO(const char *dev_name,
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const u32 status,
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const u8 severity),
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TP_ARGS(dev_name, status, severity),
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TP_STRUCT__entry(
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__string( dev_name, dev_name )
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__field( u32, status )
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__field( u8, severity )
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),
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TP_fast_assign(
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__assign_str(dev_name, dev_name);
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__entry->status = status;
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__entry->severity = severity;
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),
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TP_printk("%s PCIe Bus Error: severity=%s, %s\n",
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__get_str(dev_name),
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__entry->severity == AER_CORRECTABLE ? "Corrected" :
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__entry->severity == AER_FATAL ?
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"Fatal" : "Uncorrected, non-fatal",
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__entry->severity == AER_CORRECTABLE ?
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__print_flags(__entry->status, "|", aer_correctable_errors) :
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__print_flags(__entry->status, "|", aer_uncorrectable_errors))
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);
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#endif /* _TRACE_AER_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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